With Instagram, the focus is on the present tense.

You can be a couple in London who happen to take pictures of their breakfasts every day - it's called @symmetrybreakfast - and you can gain hundreds of thousands of followers overnight because people are genuinely interested in your unique angle on the world.

On the intimate relationships, I'd say you can be someone who wouldn't normally get attention in traditional media and come onto Instagram and build this massive following.

The best products in the world have a point of view. The worst products have none.

The number of people who have either gotten married or had kids or started dating or just made great friends over Instagram is countless. I think we're the only platform that continues to be successful in bringing people together in real life for these real relationships.

I was never as focused in math, science, computer science, etcetera, as the people who were best at it. I wanted to create amazing screensavers that did beautiful visualizations of music. It's like, "Oh, I have to learn computer science to do that."

The major reason why Instagram works is that you can follow anyone out there and start following their photos immediately.